sctp: kill unused macros in head file

1. SCTP_CMD_NUM_VERBS,SCTP_CMD_MAX
These two macros have never been used for several years since v2.6.12-rc2.

2.sctp_port_rover,sctp_port_alloc_lock
The commit 063930 abandoned global variables of port_rover and port_alloc_lock,
but still keep two macros to refer to them.
So, remove them now.

commit 06393009000779b00a558fd2f280882cc7dc2008
Author: Stephen Hemminger <shemminger@linux-foundation.org>
Date:   Wed Oct 10 17:30:18 2007 -0700

    [SCTP]: port randomization

Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 3 deletions

diff --git a/include/net/sctp/command.h b/include/net/sctp/command.h
index 2c55a7ea20af..c01dc99def07 100644
--- a/include/net/sctp/command.h
+++ b/include/net/sctp/command.h
@@ -111,9 +111,6 @@ typedef enum {
         SCTP_CMD_LAST
 } sctp_verb_t;
 
-#define SCTP_CMD_MAX            (SCTP_CMD_LAST - 1)
-#define SCTP_CMD_NUM_VERBS      (SCTP_CMD_MAX + 1)
-
 /* How many commands can you put in an sctp_cmd_seq_t?
  * This is a rather arbitrary number, ideally derived from a careful
  * analysis of the state functions, but in reality just taken from